monroe



Feb. 27, 1923,

2 SHEET SHEET I.

FILED APR. I8, 1922.

FIG. I

Feb. 27, 1923. 1,446,920. E. M. M 0 N R 0 E.

VACUUM GASOLINE FEED.

FILED APR. 18, I922. 2 SHEETS-SHEET 2.

Fig.2.

xll m lllllllillir 15 J 5% Hu qmli M 52 56 ,lW Hl I GD 7 MMonrow certain new a ncbuseful Improvements in:

Patented eb. 27,

I s; M: Mormonor mmntmowmngweme be Ives um; GASOLINE FEED.

" Attention memes;

To all ibh omit mitgj o'onvm: 1 I V I Befit known that; I, E 'M N E, e-

citiz'en ofthe'f United States of Am rica, re

sidin g at Middletown, the County of [Org-e ange and State'of New York, have invented Vacuum 'Gzi-zsoline Feeds; of which thefollowing is a specification, l g invention relates to fuel feeding (1e.- viees for earburetors and; more particularly to. fuel feeding. devices of the vacuum feed type which may be used tosupplyilifll from; a low level supply tank to ecarbureto u, l;ihe invention, although capable "of 'otlie'r -uses,- is particularly suitable ,afuelf'ieeding means for the carburetors. of automobiles a d. other self propelled vehicles]; i l

The[primary1ob'ectof the invention is to generally simplify "andwiinprove devices of this: k nd w ereby t ame mi -Y m et w all of the requirements fore successful comg Inercial use Another object of the inventionis to render the various internal parts readily acces sible by simpleiendfpraoticgel construction and relation of the vaeuum chmnber an res; ervoir of the device. [1 i e 7 Another object of therinvention is tolprq videasimplified and improved form'of float actuated valve mechenism' whereby instantaneous and simultaneous closing of" the vent: port andlopening of the suot'ion port is hart end vicefversa. Still another object ofthe invention is fco provide an. improved and. highly ;efli cie1i'tmeans; for feeding ,the 'fuel to the vacuum chamber. and from the. vacuumchernber to thereservechamherorreservoir] e ,Viththe above ygfe ner'al objects in view ztnd'othersthat will eppea-rasfth e nature of the inventioniis better understood, thesmne consists of the. novel form-,ooinbin'zition end arrangement of. parts hereinafter more fully ings and clair'ned, I,

' In the drawingsfi I Figure 1 isg view inside elevatio-n,witll the walls of thevacuum chamber fand'resere voir broken away to illustrateinternal inechdescribed, shown in theaecompanyingr drawencewiththepresent inwention f I T Figure 2 lse fragmentary elevatlonal view broken away looking towerdsthe left of Figure l ancl' with theibottom,portionof thereservereservoir renioved. v

1922. esehrn. 554,431."

Figure-3: is top pltinwiewof the defiesbroken away;

shown in Figure 1 with parts removed and -Referring'f-inore in detail to the several? views; the"fihvention-Cembodies a vacuum chamber 5 preferably relatively smaller-than the reserve oharn'beror reservoir '6 and rof er tbly fornied integral with thecover 7 or sgud reservoir 6-so that the chamber 5 will be superimposed ueon the chamber 6'- when" the cover 7" is inplecez The cover 7 may be quickly detachable and yet efliectivelv clamped" place by the provision of liingecl bolts 8 on the opposite sides oft'he reservoir 6 adapted-for engagement or positioning betweenpairs: oflug's" 9 0n*thecover Tithe u-pper faloe's'" of which are engagedby wing nuts 10 "which are threaded upon the bolts 8 for elemping. the cover tightly in, place. The chamber 5 is preferably; provided with z flenge 11 at its open upper end to 'whicl'i is'suitably' bolted a cover plate 12 and the cover 12 is preferably made water tight andair by means of a, suitable gzrsket disposed between. the I cover plate 12 and the flange 11. e

The reserve chamber or reservoir 6 isprovidedwith at bottom outlet pipe 14 adapted to ooinmunicetewith the fuel inlet of a" earburetorin. the usual manner; and" the pipe 15 extends exially through the covers 7 and 12; f'ro alpoint spacedfrom and above the bottom; of the chamber 6 to a oint above the cover 12" where it. is adapted tobe con nected with a low level" supply tank, not shown; automatic; valve device includ ing a casing 1 6 attached"tothe lowerend of the pipe 15- within the reserve chamber said'valve device embodying a hollow ease ing with one portjcommuniioafiing with the pipe 15 and another"port -eornrnunicatin-g with; a helical coil pipe 1? whieh' extends j aoen't the Cover? where terminates in an upturned end 18 projecting: through the cover 7 into the vacuum chamber 5- ne'ar the by me ans olfTetballor loose" valve'lnember 20 arranged within a suitable chamber 0f the veasing 16; and Said casinghasjan aclclitio' lo port '21 opening into the chamber 6 anidos dby we, be l w 0 henth h froln the easing lfi'upwerdly to apoint ad- I ter closes the port 19. The ball valve 20 may move away from the port 19 and is limited in such movement by a suitable stop 22, the movement of the valve 20 away from the part 19 providing communication with the chamber 6 from the lower end of the coil 17 through the ports 19 and 21.

The outlet end of a suction pipe 23 is suitably fixed in an opening in the cover 12 of the vacuum chamber 5, and this pipe is adapted to be connected with the inlet mamfold of an engine in the usual manner so as to create a suction in the chamber and I in this way also create a-suction through fixed on the pipe 15 above the float 24.

tripped. The valves 25 and 26 are. adapted the coil 17 for drawing the fuel upwardly through said coil from the pipe 15 into.

the vacuum chamber 5, the fuel being prevented fromflowing into the chamber 6 at this time by reason of the fact that ball 20 willbe held seated by the suction to cover the ports 19 and 21. i j

A float 24 is slidably mounted for vertical movement on the pipe 15 within the chamber 5 and is connected by means to be specifically later described so that a vent valve 25, will be opened. upon ascent of the float 24 while a valve 26 will be simultaneously closed, the valve 26 controlling the vacuum pipe 23, and such connections also providing for the simultaneous closing of the valve 25 and opening of the valve26 upon descent of this float 24, such movement of the float being caused by the rise and fall of the liquid fuel in the chamber 5.

The valve 25 is the well known atmospheric vent valve and is slid ably mounted in a port provided through the cover 12 and includes a stem operatively engaged-with a pivoted link 27 which has is inner end mounted as at28 on a suitable bracket 29 which is The link 27 is pivoted as at 30 at its other end to the upper end of a further link 31 which depends and is slidably connected to the float 24 by means of a pin 32 extending through a longitudinal elongated slot 33 provided in the lower end ofthe link 31, the pin 32 being fixed to the adjacent side of the float 24. The parts having a similar constructionand designatedby the same numerals, operatively connect the, valve;.26 with the float 24 at the opposite side of the pipe 15, the only difference-in the structure being that the valves 25 and 26 are so proportioned and their seats sofarranged that one valve will be opened while the other is closed. For this reason the valve 25 is shown seating downwardly. and the valve 26 seating upwardly. p

The pin and slot connections 32, 33 be: tween thefloat 24 and the links, 31 is pro- .vided for the purpose of giving ample time for the fuel to pass before the valves are to be instantaneously operated and in order be suddenly and instantaneously swung upwardly or downwardly as the case may be for the operation of the valves.v A small vent pipe 35 extends from a point above the maximum level of the gasoline and near'the top of'the chamber 5 to a point slightly within the upturned end 18 of the coil 17. This ventjpipe insuresfull discharge of the coil 17 before the suction action operates, and thus furnishes a rapidly continuing supply of fuel to the carburetor. V

The device is adapted to be fastened upon the dash of an automobile or upon any other suitable support by 'meansof screws or bolts passing through a suitable bracket 36 which is preferably cast integral with the cover 7 of the chamber 6.

In operation, the fuel is first drawn from the gasoline tank through pipe 15 and the coil 17 which islocated in the reserve chain 23leading to the manifold. At' the same time the vent valve 25 is opened and the fuel is discharged into the lower chamber through the coil 17 the weight of the fuel in the coil being sufiicient to unseat'the valve 20 for this purpose. The fuel may then readily pass from the chamber 6 through pipe 14 to the carburetor. As soon as the coil 17 empties, the float 24 will be lowered and thereby cause closing of the vent valve 25 and opening of the suction valve 26 so that suction again takes place for a repetition of the above operation.

It will be seen, from the foregoing description, that the present device embodies a suction feed for internal combustion engines which will operate perfectly by rapidly ereated'vacuum under the slowest speed as well as under the highest possible'speed.

A suitable vent tube 37 communicates with the top' of the chamber 6 and preferably extends upwardly alongside the chamber 5, terminating in an inwardly and down wardly turned open upper'end portion 38 disposed beneath the flange 11 and constituting a safety vent for the reserve chamber 6. p

From the above description of the construction and operation of the device it is believed that the same will be fully understood, it being understood that minor changes are contemplated in details of construction that'will fall within the scope of the invention as claimed.

Ic1a1mis: I

1. Avacuum fuel feed device comprising Having thus described my invention what a reserve chamber or reservoirhaving a vacuum chamber disposed thereabove,a vertical axial inlet pipe for fuel extending through the vacuum chamber and into. "said bottom of the vacuunrchamber, a valve casj-f 111g secured to the lower end of thefuel inlet pipe and to thelower end of said coil, a suction pipe communicating with the topxof tical direction, and meansoperatively conthe vacuum chambeigcand means operable by the suction for causing the fuel to beled,

from the inlet pipe to said coil, said last named means being operable upon cessation of the suction by the column of fuel in the co1l'for opening communication between the lowerend of the coil and said reserve Chill He her, and an outlet pipe for said reserve chamber. f

2. A vacuum feed devicefconiprising'a re serve'chamber or reservoir having a vac lumchamber disposed ,thereabove, a VGllllCttl axial inlet pipe for fuel extending through the vacuum chamber and into said reserve chamber, a helical coil arrangedwithin the reserve chamber and having an open upper-c end communicating with the bottom of the vacuum chamber, a valve casing secured to the lower end of the fuel inlet pipe and to the lower end of said coil, a suction pipe communicating with the top of the vacuum chamber, and means operable bythe suction for causing the fuel to be ledfrom the in let pipe to said coil, said last named means being operable upon cessation of the suction by the column of fuel inthe coil tempt ing communicationbetween the lower end of the coil and said reserve chamber, an outlet pine for said reserve chamber, and a vent pipe extending in the vacuum chamber from .a point nearthe top of the'latte'n slightly into the upper end ofsaid coil.

3. A vacuum fuel feeddevice comprising a reserve chamber or reservoir having a vacuum chamber disposed thereabove, a verti- {with the fuel inlet pipe and vacuumcham her, and means operatively connecting the cal axial inlet pipe for fuel extendin through the vacuum chamber andinto said;

reserve chamberQa helical coil arranged within the reserve chamber and having; an

pipe and to the lowerend of said coil,"a suction pipe communicating with the top of the vacuum chamber, means operable by the suction for causing the fuel to be led from the inlet pipe to said COll, said last named means being operable upon cessation of the suction by the column of fuel in the coil for,

valve casing having a lateral'port and a valve chamber, and a loose valve within this valve chamber operable by the suction for closing said port.

4. A device like that described in claim 1 wherein the vacuum chamber is provided with. an atmospheric vent port, a valve normally closing said port, a second valve normally allowing communication between the vacuum chamber and the vacuum pipe, a

float slidable. on the fuel inlet pipe in a vernecting said float with said valves whereby thevent valve is opened upon ascension of thefloat while simultaneous closing of the suction pipe valve ishad instantaneously.

s 5. A device like that described in claim 1 whereinthe vacuum chamber is provided w th, an atmospheric vent port, a valve nor- 'mally closing said port, a second valve normally allowing communication between the vacuum chamberand the vacuum pipe, a float slidable on the fuel inlet pipe in vertical direction and means operatively con necting said float with said valves whereby the vent valve is opened upon ascension of the'float while simultaneous closing of the suction pipe valve is had instantaneously,

said operative connections between the float and the valve embodying a link pivoted to a fixed portion of the inlet pipe above the float,

a econd link pivoted to the other end ofthe first namedlink and longitudinally slidably attached to said float, and tension means operatively connecting the links of each valve at the pivotal connection between saidlinks of each valve. 1

6. In a vacuum feed device, a lowerreserve chamber having a bolted on cover with an integral vacuum chamber, means operable by suction for feeding fuel tethe suction chamber and upon cessation of suc- ,tion to allow said fuel to flow to the reserve chamber, said last named means including an inlet fuelpipe, a coil arranged within" the reserve chamber and communicating fuel inlet pipe with the coil for automati-' cally causing thefuel to flow to the vacuum chamber through the coil from the fuel inletv pipe'upon occurrence of suction in the vacuum chamber and movable bythe liquid in l i the coil and vacuum chamber for allowing said fuel to pass through thec'oil to the said reserve chamber, upon cessation of the .'suc tion; V I v a In testimony whereof I aflix myvsignature.

ELLA M onRon 

